Stove



Jan. 8 1924. 1,480,373

w. c. COLEMAN STOVE Filed April 23. 1923 I 2 Sheets-Sheet 1 /6 liiirgl22 n Ill IQN VENTOR ATTORNEY Jan. 8, 1924. 1,480,373

' W. C. COLEMAN STOVE Filed April 23. 1923 2 Sheets-Sheet 2 25 4 i A? vlllfilillmlil 1| \l 62f /4,zf 6 4 7/ 23/2 lllllll [NVENTOR A TTORNE YPatented Jan. 8, 1924.

UNITED STATES WILLIAM c. COLEMAN, or WICHITA, Kansas.

srovn Application filed April 23, 1923. Serial No. 684,138.

To all whom it may concern:

Be it lmown that I, WILLIAM C. COLEMAN, a citizen of the United States,residing at Wichita, in the county of Sedgwick and State of Kansas, haveinvented certain new and useful Improvements in Stoves; and I do declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification. This invention relates to oilstoves in which a burner is employed, receiving its supply from a fueltank, the fuel being vaporized preparatory to being mixed with airbefore it is fed to the burner.

This invention particularly comprehends a novel form of preheater soassociated with a burner and vaporizing chamber that the vaporizingchamber can be preheated before the fuel is fed into the burner.Ordinarily, the preheater is located adjacent to the burner outlets andthe oil is initially passed cold through the preheater into the burneror priming pan and ignited so that the products of combustion willcontact with the outside of the preheater and heat it hot enough tovaporize the incoming oil.

According to this method the burner frequlently becomes flooded withdisastrous resu ts.

According to my invention a charge of oil is fed into the priming panaway from the heater so that the preheater is heated to the desiredtemperature to vaporize the incoming oil; then the burner is moved overto the preheater or vice versa, and since the incoming oil willthereafter be vaporized before it enters the burner, liability of theburner being flooded will be entirely elimi nated. V The novelconstruction of the invention will be apparent by reference to thefollowing description in connection with the accompanying drawings, inwhich Fig. 1 is a perspective view of an oil burning stove constructedin accordance with my invention, showing the burners in their normalpositions.

Fig. 2 is a similar view showing the burners moved out of alignment withthe vaporizing chamber and the preheater in line With the vaporizingchamber.

Fig. 3 is a vertical, longitudinal, sectional view through the burnerconstruction.

Fig. 4 is a cross sectional view on the line 14 of Fig. 3.

Fig. 5 is a cross sectional view on the line 55 of Fig. 3, and

Fig. 6 is a plan view of a of burner construction.

The stove'is shown as comprising a case 55 having a bottom 1, side walls2 and 3 and end walls 4 and 5. The end wall 4. isprovided with a slot 6through which the stem of the valve for controlling the fuel to theburner may project.

The burner structure is shown as including a casting '7 havingoppositely disposed air inlet ports 8 and a fuel inlet port 8'. Thechamber 9 communicates with a longitudinal passageway 10, at the ends ofwhich 75 are burners 11 and 12, the burner 11 being in opencommunication with the-passageway 10 and the burner 12 being adapted tobe valved by a valve 13 on a stem 14, which projects through thepassageway *and 30 through the slot 6, the stem having a right angularprojection 15, normally outside the casing.

The vapor inlet 8' is adapted to communicate with a fixedpipe 16 incommuni- 95 cation with a fuel tank 17 through a pipe 18, there being avalve 19 valving the port area of the pipe 16; the pipe 16 constitutingthe vaporizer, by means of which the oil is converted from a liquidphase to a 0 vapor hase.

Carried at the side of the burner 11 is a priming pan'20 which is in theform of an elongated cup with a concave end wall 21 and preferably witha flanged opening 95 in its bottom. When it is desired to prime theburner, oil or alcohol is introduced into the priming pan 20 and theburners are shifted out of line with the vaporizer tube 7 16. This canbe accomplished by reason of 1 modified form vaporizing tube 16 hotenough to vaporize the oil. The valve 19 may be slightly opened to feedoil to the cup or priming pan 20 to replenish the fuel so that thetemperature of the vaporizing tube 16 will be relatively high. When thevaporizing tube 16 is hot enough, the burners can be shifted back to theposition shown in Fig. l, whereupon the fuel will be fed from the tank17 through pipe 18 into the burner =casting.

If the valve 13 is closed, the fuel will be supplied only to the burner11 but if the valve 18 is open, fuel will be fed both to the burners 11and 12, as will be readily understood by reference to Fig. 3.

It will be apparent that the vaporizer chamber can be readily primed bymoving the burner casting over to the position shown in Fig. 2 and thatjust as soon as the vaporizing tube is hot enough. the burners can beshifted back to the position shown in Fig. 1.

The valve 13 is provided with an extension 15 for a definite purpose:that is, the extension must be in a vertical position in order to shiftthe burners and when it is in that position, the valve 13 will beclosed. If the valve stem is turned so that the stem 15 is in ahorizontal position, it' will be impossible to shift the burners becausethe end of the extension 15 will hook over the edge of the slot 6 duringtheshifting operation. This will indicate to the operator that the valve13 is open and that it must be closed before the burners are shifted. Ifthis were not provided for, it would be possible to shift the burnerswith the valve 13 0 en; then when the burners were shifted bacr tooperative position, the valve 13 would still be open and would cause thegas and possibly oil to leak out through the burners 12 with disastrousresults. Therefore, the bendingover of the part 15 is a safety elementin the construction of the burner.

The valve stem is provided with a polygonal cross section adapted to bereceived in the socket of a key so that the valve 19 will notaccidentally be opened. It requires a valve key 26 to operate the valvestem; consequently liability of tampering with the burner will bereduced to a minimum.

Attention is called to the fact that in Fig. 6 I have shown a slightlymodified form of burner conforming generically to the form shown inFigs. 1 to 5 but instead of shifting the burner, the tube 16 isshiftahle by mounting it on a universal joint 27 and since it. isconnected to the pipe 18, when it is desired to shift the tube 16', aslight longit-udinal movement of the tube 16', due to the yieldingtendency of the pipe 18, will allow the tube 16' to be withdrawn fromthe casting and swing over to the dotted line position shown in Fig. 1,where it will be over the priming pan 20, constructed substantially likethe priming pan shown in the preferred form.

This is merely an alternative construction, it being obvious that theresult can be accomplished by either shifting the burners with respectto the vaporizing tube or vice versa.

What I claim and desire to secure by Letters Patent is:

1. In a stove, the combination with a fue oil vaporizer, a burneradapted to receive fuel from the vaporizer but movable inde pendentlythereof, a priming pan carried by the burner, and means for effectingrelative movement between the burner and the vaporizer so'that thevaporizer will normally be in line with the burner but upon relativemovement between the burner and the vaporizer, the priming pan will bein line with the vaporizer.

2. In an oil stove, an oil vaporizer, a burner, a priming pan, and meansfor effective relative movement between the vaporizer and the primingpan and the vaporizer and the burner so that the vaporizer mayalternately align with the priming pan and with the burner.

3. In an oil stove, in combination, a vaporizer, a burner, a priming pancarried by the burner, and means for shifting the burner sidewise toalternately align the burner and the priming pan with the vaporizer.

4:. In an oil stove, in combination, a vaporizer, a burner, a primingpan carried by the burner, and means for shifting the burner sidewise toalternately align the burner and the priming pan with the vapor-- izer,the shifting means comprising a link connected to the burner andprojecting through an opening in the stove.

5. In an oil stove, the combination with an oil vaporizer, an oilburner, a valve for the oil burner having a stem provided with a rightangular projection, and means for oscillating the burner into and outofline with the vaporizer, the stem of the valve being adapted to projectthrough an opening in the stove case when the burner is in line with thevaporizer and to be received within the stove case when the burner isout of line with the vaporizer, the right angular projection on thevalve for the burnerbeing adapted to overlap the edge of the openin inthe stove case when the valve is unseat and to be susceptible of beingmoved through mechanism, and means for actuating the the opening in thestove case when the valve burner mechanism to alternately align the isseated. burner and the priming pan with the vapor- 10 6. An oil stovecomprising a case having izer. e a fixed vaporizer, a 7 burner mechanismIn testimony whereof I affix my signature.

mounted to swing in an are within the stove case, a priming pan carriedby the burner WILLIAM C. COLEMAN.

